Water hardness in Deltebre
44 °fH very hard
Tap water in Deltebre is very hard: 44 °fH (440 mg/L · 25.7 gpg · 24.6 °dH).
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 43901 (2026-07) · data checked 2026-10-19
SINAC, the Ministry of Health's drinking-water register, reports 440 mg/L CaCO₃ for Deltebre, very hard. Towns on the Ebro delta and coast nearby range from 296 to 534 mg/L, and the record does not name the source. Scale forms quickly in kettles, heaters and washing machines, and a softener is a common answer.
Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
Water data
| Total hardness | 44 °fH |
|---|
How Deltebre compares
- Tap water in Deltebre is 119 % harder than the median of the 4988 cities we track in Spain (20.1 °fH).
- By hardness it ranks 446 of 4988 in Spain (1 = hardest); 91 % of these cities have softer water.
- In Tarragona it is number 46 of 181 cities; the regional median is 35.4 °fH.
- Nearest city with clearly softer water: l'Ampolla, 12 km away (33.7 °fH).
- Nearest city with clearly harder water: Tivissa, 32 km away (55.2 °fH).
Ranking of the hardest and softest water in Spain →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Deltebre
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 25 °dH |
| AEG / Electrolux | 6 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Deltebre water hard or soft?
It is very hard: 440 mg/L as CaCO₃ (25.7 gpg, 24.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Deltebre safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Fuentes españolas usan °fH (grados hidrotimétricos franceses) o mg/L CaCO₃.
How many grains per gallon is Deltebre water?
25.7 gpg, equal to 24.6 °dH, 44 °fH or 440 mg/L calcium carbonate.
What dishwasher salt setting should I use in Deltebre?
For 440 mg/L (24.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Deltebre?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 43901 (2026-07). Method: own measurement. SINAC, Ministerio de Sanidad — Información de un abastecimiento, municipio 43901 · Outdated figure? Tell us